Equity-Based Awards, Profits Interest Awards (Details) - Profits Interest Awards [Member] $ in Millions	9 Months Ended
	Sep. 30, 2016 USD ($) shares
EPD PubCo I [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	30 days
Common units owned by Employee Partnership (in units) | shares	2,723,052
Class A capital base	$ 63.5	[1]
Class A partner preferred return rate	6.6638%	[2]
Expected liquidation date	Feb. 01, 2020
Estimated grant date fair value of profits interest awards	$ 13.2	[3]
Unrecognized Compensation Expense [Abstract]
Unrecognized compensation cost	$ 11.2	[4]
Recognition period for total unrecognized compensation cost	3 years 4 months 24 days
Estimated Grant Date Fair Value Assumptions [Abstract]
Expected Life of Award	4 years
EPD PubCo I [Member] | Minimum [Member]
Estimated Grant Date Fair Value Assumptions [Abstract]
Risk-Free Interest Rate	0.90%
Expected Distribution Yield	6.20%
Expected Unit Price Volatility	29.00%
EPD PubCo I [Member] | Maximum [Member]
Estimated Grant Date Fair Value Assumptions [Abstract]
Risk-Free Interest Rate	1.10%
Expected Distribution Yield	6.70%
Expected Unit Price Volatility	40.00%
EPD PubCo II [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	30 days
Common units owned by Employee Partnership (in units) | shares	2,834,198
Class A capital base	$ 66.1	[1]
Class A partner preferred return rate	6.6638%	[2]
Expected liquidation date	Feb. 01, 2021
Estimated grant date fair value of profits interest awards	$ 14.8	[3]
Unrecognized Compensation Expense [Abstract]
Unrecognized compensation cost	$ 12.9	[4]
Recognition period for total unrecognized compensation cost	4 years 4 months 24 days
Estimated Grant Date Fair Value Assumptions [Abstract]
Expected Life of Award	5 years
EPD PubCo II [Member] | Minimum [Member]
Estimated Grant Date Fair Value Assumptions [Abstract]
Risk-Free Interest Rate	1.10%
Expected Distribution Yield	6.20%
Expected Unit Price Volatility	27.00%
EPD PubCo II [Member] | Maximum [Member]
Estimated Grant Date Fair Value Assumptions [Abstract]
Risk-Free Interest Rate	1.30%
Expected Distribution Yield	6.70%
Expected Unit Price Volatility	40.00%
EPD PubCo III [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	30 days
Common units owned by Employee Partnership (in units) | shares	105,000
Class A capital base	$ 2.5	[1]
Class A partner preferred return rate	6.5381%	[2]
Expected liquidation date	Apr. 01, 2020
Estimated grant date fair value of profits interest awards	$ 0.5	[3]
Unrecognized Compensation Expense [Abstract]
Unrecognized compensation cost	$ 0.5	[4]
Recognition period for total unrecognized compensation cost	3 years 6 months
Estimated Grant Date Fair Value Assumptions [Abstract]
Expected Life of Award	4 years
Expected Distribution Yield	6.20%
EPD PubCo III [Member] | Minimum [Member]
Estimated Grant Date Fair Value Assumptions [Abstract]
Risk-Free Interest Rate	0.90%
Expected Unit Price Volatility	29.00%
EPD PubCo III [Member] | Maximum [Member]
Estimated Grant Date Fair Value Assumptions [Abstract]
Risk-Free Interest Rate	1.00%
Expected Unit Price Volatility	40.00%
EPD PrivCo I [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	30 days
Common units owned by Employee Partnership (in units) | shares	1,111,438
Class A capital base	$ 25.9	[1]
Class A partner preferred return rate	6.6638%	[2]
Expected liquidation date	Feb. 01, 2021
Estimated grant date fair value of profits interest awards	$ 5.8	[3]
Unrecognized Compensation Expense [Abstract]
Unrecognized compensation cost	$ 1.1	[4]
Recognition period for total unrecognized compensation cost	4 years 4 months 24 days
Estimated Grant Date Fair Value Assumptions [Abstract]
Expected Life of Award	5 years
EPD PrivCo I [Member] | Minimum [Member]
Estimated Grant Date Fair Value Assumptions [Abstract]
Risk-Free Interest Rate	1.10%
Expected Distribution Yield	6.20%
Expected Unit Price Volatility	27.00%
EPD PrivCo I [Member] | Maximum [Member]
Estimated Grant Date Fair Value Assumptions [Abstract]
Risk-Free Interest Rate	1.30%
Expected Distribution Yield	6.70%
Expected Unit Price Volatility	40.00%

[1] Represents fair market value of the Enterprise common units contributed to each Employee Partnership at the applicable contribution date.

[2] For each period and Employee Partnership, the Class A Preference Return amount equals the Class A Capital Base, after adjusting for certain retained cash distributions and other amounts as defined in the underlying agreements, multiplied by the applicable Class A Partner Preferred Return Rate divided by 365 or 366 days, as the case may be during such calendar year, multiplied by the number of days in the applicable period.

[3] Represents the total grant date fair value of the profits interest awards irrespective of how such costs will be allocated between us and EPCO and its privately held affiliates.

[4] Represents our expected share of the unrecognized compensation cost at September 30, 2016. We expect to recognize our share of the unrecognized compensation cost for PubCo I, PubCo II, PubCo III and PrivCo I over a weighted-average period of 3.4 years, 4.4 years, 3.5 years and 4.4 years, respectively.